Obviously talking about the classic era from the 70s/80s here, not this skater dude/emo crap. Bands like The Clash, The Jam, Buzzcocks, Sex Pistols etc vs. The Ramones, Black Flag, Dead Kennedys and Minor Threat.
I always found that American punk is a lot more raw, ramshackle and aggressive, especially the hardcore stuff. A lot of the time an album sounds like a rough demo, such as Black Flag's Damaged and you can feel the energy through your speakers when you hear them. They didn't seem to care much for intricacy, just sheer power.
British bands, on the other hand, despite also being pretty raw and aggressive, could also write the perfect pop song. I also found the Brits to be more experimental with other genres, like The Clash did on London Calling which is arguably the GOAT of all GOAT albums.
I always found that American punk is a lot more raw, ramshackle and aggressive, especially the hardcore stuff. A lot of the time an album sounds like a rough demo, such as Black Flag's Damaged and you can feel the energy through your speakers when you hear them. They didn't seem to care much for intricacy, just sheer power.
British bands, on the other hand, despite also being pretty raw and aggressive, could also write the perfect pop song. I also found the Brits to be more experimental with other genres, like The Clash did on London Calling which is arguably the GOAT of all GOAT albums.